Therapeutic lamp



March 1929. F. w. ROBINSON ET AL 1,704,516

THERAPEUTIC LAMP Filed Nov. 10, 1927 IN V EN TOR.

A TTORNEY Patented Mar. 5, 1929.

UNITED STATES PATENT OFFICE.

FBEDERIC W. ROBINSON AND WILLIAM J. LEMANN, OF NEWARK, NEW JERSEY, AS- SIGNOBS T HANOVIA CHEMICAL AND MEG. 00., OF NEWARK, NEW JERSEY, A COR- PORATION OF NEW JERSEY.

THERAPEUTIC LAMP.

Application filed November 10, 1927. Serial No. 232,284.

This invention relates to electric lamps of a portable nature as used in medical therapy in the treatment of certain ailments.

It is one of the objects of the invention to provide a lamp that will produce both visible and invisible radiant energy; the latter being beyond the red end of the solar spectrum,

and in which the electrical energy is converted into radiant energy, and adapted to increase the infra red radiations.

- A further feature is in the provision of an infra red light generating unit having combined with it an efiicient reflector whereby interference by radiation is greatly reduced.

These and other advantageous objects, such as simplicity, compactness, ease of operation, changing of the radiant elements, and manner of holding the same, are accomplished by the novel and characteristic construction and combination of parts hereinafter described and shown in the accompanying drawing, constituting an important portion of this disclosure. and in which 1 Figure 1 is a front elevational view of a lamp embodying the invention.

Figure 2 is a side elevational viewof the same, certain parts being in section and others broken away to show the construction.

Figure 3 is a fragmentary plan view of the interior of the lamp, the cap being removed. 4

Figure 4 is a perspective view of the conical cap support for the inner ends of the generating elements.

Referring in greater detail to the drawing, the numeral 10 designates any convenient fixed or movable support having a shoulder at its upper end from which rises a tapered stem 11 adapted to engage in a correspond ing socket 12 provided with a clamp screw 13.

The socket 12 extends rearwardly from a bonnet 14 having an expanded flange portion 15 to which is attached a substantially parabolic reflector 16, its outer edge being rolled to produce a reenforcing bead 17.

Fixed to the lower side of the bonnet 14 is a non-conducting handle 18 by which the apparatus may be conveniently manipulated when off the support 10, this handle having an axial passage to receive a current supplying cord 19, the same being encircled by a wire coil 20 to avoid entanglement as is customary.

In the opposite,upper side of the bonnet 14 is a ventilating opening 22 which serves to permit the lamp from becoming excessively heated.

Permanently secured to the inner rear wall of the bonnet 14 is an inleaching, non-conducting socket 23, its forward conical portion extending through an axial opening in the reflector 16, and having a screw threaded metallic lining 24 electrically connected with one of the conductors in the cord 19, the other conductor being similarly connected to a central bolt element 25.

Engageable with the lining 24 is a threaded sleeve 26 enshrouding a dielectric plug 27, through which the bolt 25 passes, the plug 27 being engaged at its outer end in a dielectric base 28. v

The base 28 contains recesses disposed at ninety degrees apart to receive the inbent ends of four oppositely disposed, curved arms 31, 32, 33 and 34 of resilient conducting metal, held securely in place by bolts 35. The arm 31 has a current carrying clip 36 in electrical engagement with the bolt 25 and which also engages with the arm 32.

A spring contact 37 connects the socket lining 24 with the arm 33, which in turn is connected with the arm 34 by an arcuate current carrying clip 38; thus it will be seen that the arms 31 and 32 are in circuit with one pole of the electrical current and the opposite arms 33 and 34 with the opposite pole.

Carried on the spring arms 31 to 34 are insulators 40 and mounted on the opposite, outer sides of the insulators is an annular flange 41 formed at the base of a hollow conical support 42 ending in semi-spherical crown 43, and provided with a plurality of concave sockets 44, this support being preferably cast I aluminum.

The insulators are held to the arms 31-34 by bolts 45 passing through insulators 46 so that current is prevented from passing from one to the other.

The sockets 44 are adapted to receive the ends of light generating elements 47 the opposite ends of which engage in corresponding sockets 48 formed in reversely curved current carrying clips 49 preferably aluminum rigidly fixed on the curved ends of the spring arms 31-34.

The elements 47 are thus readily mounted or dismounted and obviously conduct current from the pairs of arms 31--32 to the opposite pairs 33 ?34, becoming luminescent,being of non-metallic'but conductive material.

When in operation current from one of the conductorwiresinthe cord 19 passes through theibolt25,andclip 36 to the spring strips 31 and'32, thence through the elements 47 to the insulated conical yoke 42 to the opposite elements 47, thence the arms 33 and 34, and clip 38 to the contact plate 37, socket plug sleeve 26, and socket lining 24e'to the other wire in the cord, forming an uninterrupted circuit.

fItlisto be noted that the light producing elements are all within the scope of the reflector and that no obstacles intervene in the pathofthe light which is projected directly outward without shadows Orbreaks.

IThe'foregoing disclosure is to be regarded as descriptive and illustrative only, and not .aseflesofpaired spring arms carried thereby, one armo'f eachpair. beingin' electrical en- :gagement with one pole ofanrelectric circuit :andtthe other arms withthe opposite pole,

contactsuonzthe outer ends olfall of said arms, said contacts havinglsockets,.a conical yoke secured in insulated relation to the inner ends ofsaid, arms, said yokes having sockets opposed to the contact sockets, and. infrared generating .elements removably engaged between the sockets of said contacts and cone sockets.

2. A therapeuticllamp for generating radiantenergy comprismgan insulating base, a plurality of elongated energy converting elc ,ments, a conducting yoke between. the inner ends of said elements, said yoke being carried on ,thelbase,:and having sockets receptive of the inner ends of-said elements, spring arms carried by said base one for each element, conductor clips connecting said arms in op- ;.posed pairs, each clip interposed in-an electric circuit, andsocketsat the ends'of said .arms to engage the outer ends of sa1d elements, said arms exerting a compressive force on the elements to normally maintain them in electrical engagement.

Atherapeutic lamp for generating ray energyiat the rod end of the spectrumcompris'ingabase containing a socket, a plug engageable therein, pairs of curved spring conducting arms fiXed on said plug to extend radially therefrom, .an electrical contact in said .base to conduct current to one of each pair of arms,.asecond contact to conduct cur- 7 arms extending beyond the apex of rent'to the other of each pair of arms, a socketed conductor yoke carried by said plug and insulated therefrom, a plurality of therapeu- -.ticlightgenerating elements removably en gaging'between said yoke sockets and arms, and a parabolic reflector carried by said base to extend outward over said light generating and carried by said arms, said yoke having sockets to support the opposite ends of said elements, and conductors for supplying electrical energy to the lamp. asrestrictive orlimitative of the invention, ,7 of iwhic'h obviously an embodiment may be 5. A therapeutic lamp, comprising a conductor socket, a plug removably engaged therein,- current carrying arms :radiating from the socket, electrical radiant energy generating elements supported atone end'by said arms, a conductor yoke insulated from and carriedby the inner ends of said arms, said yoke having sockets to support the opposite ends of-saidelements, and conductors to supply electrical energy to the lamp.

} 6. In a therapeutic lamp, to beremovably engaged in ing socket, a pair ofspring arms radiating from the plug and connected to a terminal of a source of electric current, a second pair of spring :arms radiating from the plug and connected to another terminal of a source of electric current, a conical yoke mounted on and insulated from said plug, and radiant energy generating elements attached to the outer ends of said spring arms and having their inner ends positioned in sockets in the conical support, the outer ends of the spring arms extending beyond the apex of the conical yoke sothat theelements will be inclined inwardly towards the plug, whereby no obstacles will lie in the path of the energy gena plug adapted a current carryerated bytheelements.

their inner ends positioned in sockets inthe conical support, the outer ends of thespring the conical support so that the elements will be inclined inwardly towards the plug, whereby no obstacle will lie in the path of the energy generated by the elements 8. In atherapeutic lamp, a plug, a plurality of arms, radiating from the plug and connected to the terminals of a source of elect-rical current, a support mounted on and insulated from said plug, and radiant energy enwhereby no obstacle will lie in the path of erating elements attached to the outer en s of the energy generated by the elements. said arms and having their inner ends posi- This specification signed this 29th day of tioned in sockets in the support, the outer October, 1927.

5 ends of the arms extending beyond the outer extremity of the support so that the elements FREDERIC W. ROBINSON. will be inclined inwardly towards the plug, WILLIAM J. LEMANN. 

